Submission #80607

#	Time	Username	Problem	Language	Result	Execution time	Memory
80607		duality	Board (CEOI13_board)	C++11	100 / 100	17 ms	4184 KiB

board

#define DEBUG 0

#include <bits/stdc++.h>
using namespace std;

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

vpii A,B;
vi A2,B2;
int convert(string a,vpii &A) {
    int i;
    A.pb(mp(1,1));
    for (i = 0; i < a.size(); i++) {
        if (a[i] == '1') {
            if (A.back().first == 0) A.back().second++;
            else A.pb(mp(0,1));
        }
        else if (a[i] == '2') {
            if (A.back().first == 1) A.back().second++;
            else A.pb(mp(1,1));
        }
        else if (a[i] == 'U') {
            A.back().second--;
            if (A.back().second == 0) A.pop_back();
        }
        else if (a[i] == 'L') {
            if (A.back().first == 1) {
                A.back().second--;
                if (A.back().second == 0) A.pop_back(),A.back().second++;
                else A.pb(mp(0,1));
            }
            else {
                pii p = A.back();
                A.pop_back();
                A.back().second--;
                if (A.back().second == 0) A.pop_back(),A.back().second++;
                else A.pb(mp(0,1));
                A.pb(mp(1,p.second));
            }
        }
        else {
            if (A.back().first == 0) {
                A.back().second--;
                if (A.back().second == 0) A.pop_back(),A.back().second++;
                else A.pb(mp(1,1));
            }
            else {
                pii p = A.back();
                A.pop_back();
                A.back().second--;
                if (A.back().second == 0) A.pop_back(),A.back().second++;
                else A.pb(mp(1,1));
                A.pb(mp(0,p.second));
            }
        }
    }
    return 0;
}
int main() {
    string a,b;
    cin >> a >> b;

    int i;
    convert(a,A),convert(b,B);
    for (i = 0; i < A.size(); i++) {
        while (A[i].second > 0) A2.pb(A[i].first),A[i].second--;
    }
    for (i = 0; i < B.size(); i++) {
        while (B[i].second > 0) B2.pb(B[i].first),B[i].second--;
    }

    int ans = A2.size()+B2.size()-2,x = 0;
    if (A2.size() < B2.size()) swap(A2,B2);
    while (A2.size() > B2.size()) x++,A2.pop_back();
    for (i = 0; i < A2.size(); i++) {
        if (A2[i] != B2[i]) {
            if (A2[i] < B2[i]) swap(A2,B2);
            break;
        }
    }
    int s = 0;
    for (i = 0; i < A2.size(); i++) {
        s <<= 1,s += A2[i]-B2[i];
        if (s > ans) break;
        else ans = min(ans,s+x+2*((int) A2.size()-i-1));
    }
    printf("%d\n",ans);

    return 0;
}

Compilation message (stderr)

board.cpp: In function 'int convert(std::__cxx11::string, vpii&)':
board.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < a.size(); i++) {
                 ~~^~~~~~~~~~
board.cpp: In function 'int main()':
board.cpp:115:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < A.size(); i++) {
                 ~~^~~~~~~~~~
board.cpp:118:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < B.size(); i++) {
                 ~~^~~~~~~~~~
board.cpp:125:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < A2.size(); i++) {
                 ~~^~~~~~~~~~~
board.cpp:132:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < A2.size(); i++) {
                 ~~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10